Quizzically Yours

They can be red, white, blue, black, purple or green. Spinning wait cursor, Guru Meditation, Sad Mac, etc. are analogous to them though on different platforms. The pics shown below are of Sad Mac and a Row of Bombs (in Atari) respectively. Initially, a set of mushroom clouds were used instead of bombs but they were removed due to their resemblance to nuclear explosion clouds which were deemed politically incorrect. Identify 'they'.



Ankit gets it right

"They" are the screens of death and their varieties.